Like BLUE RIDGE BRASS!! I get all my forty cal (dirty since I provide the sources and can easily clean it myself) instances from Blue Ridge Brass! I get it through the 4,000 at a time and haven't had a 10mm situation during the bunch, nor a 9mm wedged inside https://clean40calbrass89639.canariblogs.com/5-easy-facts-about-reloading-40-s-w-described-51871875